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Finding the Fourth Proportional to 51,990.60, 78,000.30 and 34,494.60

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Solution

The fourth proportional to 51,990.60, 78,000.30 and 34,494.60 is: 51,751.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,990.60 : 78,000.30 = 34,494.60 : x
  2. Step 2: Convert to fraction form
    51,990.60/78,000.30 = 34,494.60/x
  3. Step 3: Cross multiply
    51,990.60x = 78,000.30 × 34,494.60
  4. Step 4: Simplify right side
    51,990.60x = 2,690,589,148.38
  5. Step 5: Solve for x
    x = 2,690,589,148.38/51,990.60
  6. Step 6: Final answer
    x = 51,751.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.